Artificial Selection for Host Suitability and Development Length of the Gypsy Moth (Lepidoptera: Lymantriidae) Parasite, Cotesia melanoscela (Hymenoptera: Braconidae)

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A Cotesia melanoscela (Ratzeburg) strain that attacks large gypsy moth, Lymantria dispar (L.), larvae was selected by rearing the parasite on third and fourth instars over 24 generations. Progeny production on fourth instars gradually increased as selection continued. Tests on the 10th–11th and 17th–18th generations showed that selected females produced more progeny on third or fourth instars than did females from a colony reared on first and second instars. In another experiment lasting six generations, parasites were selected for rapid development by using the first emerging females from one generation to produce the next generation. Although the number of days from oviposition to first emergence of adults decreased with time, the trend was not significant. Practical implications of the results for gypsy moth control programs are discussed.

Document Type: Research Article

Publication date: October 1, 1986

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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